The heat was still oppressive. Darkness fell without moon or stars.
"We'll soon be able to creep up on them now," said Frank. "If we can only get close enough to hear what they're saying we'll probably be able to make sure if they have Chet and Biff with them."
The boys waited until the fire had died down. The four men had all disappeared within the cave.
"Quiet, now," Frank whispered. He began to make his way out of the undergrowth. Joe followed close behind. They crept up toward the entrance to the cave.
They were about half-way across the open space when the whole scene about them was suddenly revealed with startling clarity in the livid glow of a flash of lightning. This was followed immediately by a crash of thunder that seemed to shake the very rocks on which they stood. As though this were but a prelude, rain began to fall, gently at first, then with increasing force. Other lightning flashes followed. Then the storm broke in all its fury.
A gradually rising wind began to rake the tree-tops and the swishing of leaves and creaking of limbs could be plainly heard. The dull booming of the waves on the distant shore, the moaning of the wind, the driving spatter of rain, the constant peals of thunder, continually
